Combined shuttle placer and thread cutter



Aug. 11, I925. T I 1,549,221

- E. H. RYON COMBINED SHUTTLE PLACER AND THREAD CUTTER Filed Aug. 29, 1921 2 Sheets-Sheet 1 wM-w Aug. 11; 1925. 1,549,221

E. H. RYON' COMBINED SHUTTLE PLACER AND THREAD CUTTER Filed Aug. 29, 1921 2 Sheets-$heet 2 Patented Aug. 11, 1925.

UNITED STATES PATENT OFFICE.

EPPA H. RYON, OF WALTHAM, MASSACHUSETTS, ASSIGNOR TO CROMPTO-N &; KNOWLES LOOM WORKS, O'F WORCESTER, MASS.ACI-IUSETTS", A CORPORATION OF MASSA- CHUSETTS.

COMBINED SHUTTLE PLACER AND THREAD CUTTER.

Application filed August 29, 1921.

To all whom it may-concern;

Be it known that I, EPPA H. RYoN, a citizen of the United States, residing at VValtham, in the county of Middlesex and State of Massachusetts, have invented a new and useful Combined Shuttle Placer and Thread Cutter, of which the following is a specification.

This invention relates to a shuttle placer and thread cutter particularly designed for use on automatic weft replenishing looms of the type in which the weft carriers are replaced before complete exhaustion of the weft thereon. p

It is essential for the efficient operation of the indicating and transfer mechanism that the shuttle shall be accurately positioned in the shuttle box and it is one object of my invention to provide an improved shuttle placer by which this end may be attained, preferably before the action of the weft detector and thread cutter.

Another object of my invention is to provide a yielding member supporting a thread cutting mechanism so combined with a shuttle placer that the cutting mechanism is removed from operating position when a widely misplaced shuttle is encountered, and that it can only operate after a shuttle has beenaccurately positioned. A further feature of my invention relates to the provision of a shuttle placing element angularly movable on its support and capable of successively presenting new shuttle-engaging portions of its surface in operative position.

My invention further relates to arrange men-ts and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of my invention is shown in the drawings in which Fig. 1 is a side elevation of parts of a loom to which my improvements have been applied;

Fig. 2 is a plan view of the parts shown in Fig. 1;

Fig. 3 is a side elevation of my improved thread cutter and shuttle placer Fig. 4 is a sectional elevation taken along the line 4-4 in Fig. 2, and

Figs. 5 and 6 are diagrammatic views illustrating the operation of the shuttle placer.

Serial No. 496,351.

Referring to the drawings, I have shown portions of a loom frame 10, a lay 11, a rear shuttle box plate 12 and a weft carrier magazine frame 13. A transferrer 14 is pivoted at 15 on the frame 13 and is intermittently actuated by a vertical reciprocating plunger 16', the plunger having a hook 17 at its upper end which engages a latch 18 pivoted at 19 on the transferrer. Weft detecting mechanism 20 (Fig. 2) of any suitable construction is arranged for indicating sub stantial exhaustion of Weft in the active shuttle. I have shown this mechanism as of the multiple plunger type more fully disclosed in my prior Patent No. 1,221,768 issued Mar. 3, 1917. Suitable means controlled through the weft detecting mechanism 20 is provided for swinging the latch 18 into the path of the hook 17 on the plunger 16 upon indication of substantial weft exhaustion. For a further description of the construction and operation of the transferrer actuating mechanism, reference is made to my copending application, Ser. No. 470,335, filed May 17, 1921.

A stand 20 is secured to the loom frame 10 and is provided with guides 21 and 22 for a slide 23 which is yieldingly' held in rearward position by a spring 24 mounted within the slide. One end of the spring 24 engagesa shoulder at the rear of the slide 23 and the other end engages a projection 26 on the stand 20. The projection 26 acts as a stop to limit rearward movement of the slide and also supports a rod 25 which can tends through and centers the spring 24. The outer end of the rod 25 engages an arm 25 through which the loom is stopped when the slide 23 and rod 25 are moved forward by engagement of the shuttle placer with a widely misplaced shuttle.

An arm 27 is bolted to the rear end of the slide 23 and a shuttle placing roll 28 is pivotally secured to the arm 27 by a stud 29 and nut 30. The lower face of the roll 28 is preferably recessed to receive the head of the stud 29 (as shown in Fig.4) thus leaving the space below the roll unobstructed.

A friction belt 31 is supported by a roll 32 pivotally secured to the rear end of the slide 23 by a stud 33. The belt 31 also passes around a feed pulley 34 mounted on a stud at the front of the slide and the belt is also engaged by an idle or guide pulley 36 mounted on a stud 37 vertically adjustable in a flange 38 of the slide 23. A friction plate 40 pivoted at 41 below the slide 23 is yieldingly'pressed against the under side of the belt 31 by a light coil spring 42 (Fig. 3). The feed pulley 34 has internal ratchet teeth 43 engaged by a feed pawl 44 mounted on a bell crank 45 also pivoted on the stud 35. A spring 46 is connected to one end of the feed pawl 44 and to a lug orprojection on the bell crank and holds the pawl in engagement with the ratchet teeth. An arm 47 is secured to the bell crank 45 and is connected by atelescoping link 48 to an arm 49 depending from the transferrer 14. Each downward movement of the transferrer thus provides an operating or feed stroke of the pawl 44.

' A thread cutteris mounted on the slide 23 and is positioned between the shuttle placer and the friction belt. The cutter comprises a jaw 50 secured to the slide 23 bvscrews 51 and a movable jaw 52 pivoted t5 the slide at 53 and having a depending arm 54 connected by a link 55 to one arm of the bell crank 45. Downward movement of the transferrer thus also operates through the link 55 to close the thread cutting jaws 50 and 52 and sever thethread at the time of transfer.

Reference to Fig. 3 will show, however, that the closing of the cutting jaws is delayed until the pivotal connection of the link 55 and bell crank 45 has moved clownward to and past the dead center, the operation of the transferrer being substantially at front center for the lay, the action of the thread cutter is substantially laterthan the effective operation of the shuttle placer. This allows the friction belt to secure a firm hold on the thread before the knives act. The severed end is then held by the friction belt until the temple cutter cuts the thread at the selvage.

The operation of the shuttle placing roll is indicated in Figs. 5 and 6. In Fig. 5 a shuttle S in a rather widely misplaced position is advanced by the roll 28 to the correct boxed position indicated in dotted lines, the slide 23 remaining in its rearmost position. In Fig. 6 the shuttle S is so widely misplaced that it cannot be advanced by the shuttle placer and the roll 28is thus carried directly forward with the shuttle, withdrawing the slide 23 and removing the thread cutter and friction holding device from operative position.

The telescoping link 48 permits such forward movement of the parts without breakage V of the actuating connections 'to the thread cutter.

The combined thread cutter and shuttle placer above described is particularly adapted for use in an automatic loom which indicates and transfers on the same beat of the lay as the device positions the shuttle before indication and grasps and cuts the thread as the weft carrier. transfer is being com pleted. The placing of the shuttle before indication is also of particular importance when the multiple plunger detector is used with a bobbin having holes or other recesses therein, as movement of the shuttle after the plungers have entered the holes cannot be permitted. The thread-cutting mechanism per se is not claimed herein but forms the subject matter of a divisional application Serial No. 4548, filed by me January 24, 1925.

Having thus describedgmy invention, it will be evident that changes and modifications can be made therein by those skilled in the art within the spirit and scope of my invention as set forth in the claims and I do not wish to be otherwise limited to the details herein disclosed but what I claim 1. In a loom, a shuttle placer comprising a slide, means to press said slide yieldingly rearward, and a shuttle engaging member mounted for free rotary movement relative to said slidewhen engaged by the end of a misplaced shuttle.

2. In a loom, a shuttle placer comprising a slide, means to press said slide yieldingly rearward, and a roll on said slide positioned for engagement by the end of a misplaced shuttle, whereby the position of said shuttle may be corrected.

3. In a loom, a shuttle placer comprising aslide, means to press said slide yieldingly rearward, a shuttle-engaging roll mounted for free rotation relative to said slide when engaged by the end of a misplaced shuttle, and means to attach said roll to said slide, said means beingdisposed entirely above the lower face of said roll.

4. In a loom, a. shuttle placer comprising a slide, means'to press said slide yieldingly rearward, and a shuttle-engaging member movably mounted on said slide and presenting different engaging surfaces to the shuttle during the continued operation of the loom.

.5-In a loom, a shuttle placer comprising a slide, means to press said slide yieldin 'ly rearward, and a shuttle-engaging mem er freely rotatable by engagement with the end of a misplaced shuttle but always left in position for operative engagement with a succeeding shuttle.

6. In a loom, in combination, a loom frame, a slide yieldingly mounted on said frame and having movement in a single direction only, a thread cutter mounted on said slide, and a shuttle placer also mounted on and movable-with said slide.

7.'In a loom, in combination, a loom frame, a slide yieldingly mounted on said,

frame and having movement in a single direction only, a belt mounted on said slide, means to feed said belt intermittently, a shuttle-positioning roll rotatably mounted on said slide, and a thread cutter mounted on said slide between said roll and belt.

8. In a loom, in combination, a loom frame, a slide yieldingly mounted on said frame and having movement in a single clirection only, a belt mounted on said slide, means to feed said :belt intermittently, a thread cutter on said slide, and a shuttle-engaging roll mounted on said slide, said roll removing said cutter and belt from operative position when engaged by a widely misplaced shuttle.

9. In a loom, weft replenishing mechanism, a combined shuttle placer and thread cutter, and operating connections between the thread cutter only and the replenishing mechanism whereby the operation of the thread cutter is controlled by the replenishing mechanism but the shuttle placer is operative at every alternate beat of the lay.

10. In a loom, weft replenishing mechanism, a shuttle placer operating independently of the replenishing mechanism to position the shuttle, and a thread cutter carried by said placer and operatively connected to said mechanism.

11. In a loom, weft replenishing mechanism, a shuttle placer operating independently of the .replenishing mechanism to position the shuttle and a thread cutter controlled in its operation by the shuttle placer but actuated by the replenishing mechanism.

12. In a loom, a weft detector to indicate substantial weft exhaustion, weft re plenishing mechanism operable on the indicating pick, a combined shuttle placer and thread cutter, and connections between the replenishing mechanism and the cutter, operable to cut the thread after the operation of the shuttle placer.

13. In a loom, a weft detector to indicate substantial weft exhaustion, weft replenishing mechanism operable on the indicating pick, and a combined shuttle placer and thread cutter, the cutter being operatively connected to the weft replenishing mechanism and the placer being independent of said mechanism.

14. In, a loom, a weft detector to indicate substantial weft exhaustion, weft replenishing mechanism operable on the indicating pick, and a combined shuttle placer and thread cutter, said placer being operative before the detector operates, and said cutter afterward.

15. In a loom having weft replenishing mechanism, a weft detector to indicate substantial weft exhaustion, weft replenishing mechanism operable on the indicating pick, and a combined shuttle placer and thread cutter, said placer having its operative movement before the replenishing mechanlsm operates.

16. In a loom, a weft detector to indicate substantial weft exhaustion, weft replenishing mechanism operable on the indicating pick, and a combined shuttle placer and thread cutter, said placer being operative before the cutter operates.

17 In a loom, a weft detector to indicate substantial weft exhaustion, weft replenishing mechanism operative on the indicating pick, a combined shuttle feeler and placer operative independently of said detector and mechanism to either correct the position of a. slightly misplaced shuttle or to prevent an indicated loom operation if the shuttle is widely misplaced, and a thread cutter mounted on said feeler and placer for movement therewith, said cutter being operatively connected to said replenishing mechanism.

18. In a weft replenishing loom, a shuttle placer and feeler effective to either correct the position of a slightly misplaced shuttle or to prevent an indicated loom operation if the shuttle is widely misplaced, a thread cutter, a weft detector to indicate substantial weft exhaustion, and weft replenishing mechanism indicated by said detector, all of said parts having their operative movements on the same pick of the loom.

In testimony whereof I have hereunto aflixed my signature.

EPPA H. RYON. 

